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该文采用水蒸气蒸馏法提取不同贮存时间的柳叶蜡梅挥发油,GC测定挥发油中桉油精含量,研究贮存时间对柳叶蜡梅挥发油及桉油精含量的影响,为柳叶蜡梅的质量控制提供参考。试验表明,新鲜柳叶蜡梅的挥发油含量为0.023 0mL·g-1,贮存4,12个月后,挥发油含量分别降为0.020 0,0.017 5 mL·g-1;GC方法学考察的精密度、稳定性、重复性,RSD均小于2.0%,平均回收率99.50%,RSD 1.7%;新鲜提取的挥发油中桉油精含量54.30%,随着保存时间的推移,桉油精含量升高至62%左右并保持稳定。因此,贮存时间对挥发油及其中桉油精的含量有一定影响;GC测定桉油精含量准确可靠,专属性强,可重复,适合作为柳叶蜡梅的质量控制方法。
In this paper, steam distillation was used to extract Volatile oil from C. lucorum at different storage time. The content of cineole in volatile oil was determined by GC. The effects of storage time on Volatile oil and eucalyptol content were studied. Quality control for reference. The results showed that the volatile oil content was 0.023 0 mL · g-1 and the volatile oil content was 0.020 0,0.017 5 mL · g-1 after storage for 4 and 12 months respectively. The precision of GC method , RSD was less than 2.0%, average recovery was 99.50% and RSD was 1.7%. The content of eucalyptol in freshly extracted volatile oil was 54.30%. The content of eucalyptol increased to 62 % Or so and remain stable. Therefore, the storage time had a certain impact on the content of volatile oil and eucalyptol. The content of eucalyptol determined by GC was accurate, specific and repeatable, which was suitable for the quality control of C. lucorum.